TAS5504APAG Equivalent & Substitute Parts

Part Overview

The TAS5504APAG is a 4-channel audio modulator IC in 64-TQFP surface mount packaging designed for digital audio interfacing applications. This device operates at 3.3V supply voltage and supports I2C and I2S interfaces. The TAS5504APAG carries a "Not For New Designs" product status, indicating that Texas Instruments has discontinued active development and support for this model. Finding equivalent or substitute components is necessary for ongoing production, maintenance, or redesign efforts where this legacy device is currently specified.

Substiute Parts

TAS5504APAG

Texas InstrumentsIn Stock: 2288TAS5504APAG Datasheet

Current PartRFQ

TAS5508CPAG

Texas InstrumentsIn Stock: 108230TAS5508CPAG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The TAS5508CPAG qualifies as a substitute based on the following alignment of critical parameters:

Shared Electrical & Mechanical Characteristics:

• Identical package format: 64-TQFP (10x10) surface mount
• Identical interface protocols: I2C and I2S support
• Compatible supply voltage range: TAS5508CPAG operates at 3V ~ 3.6V, which encompasses the TAS5504APAG's 3.3V requirement
• Identical functional category: Audio modulator for digital audio interfacing
• Identical RoHS and MSL compliance: ROHS3 Compliant, MSL 4 (72 Hours)

Substitution Limitation: The TAS5508CPAG provides 8 channels versus the TAS5504APAG's 4 channels. This represents a functional expansion rather than a direct 1:1 replacement. Circuit design modifications are required to accommodate the increased channel count and associated pin configuration differences.

Parameter Comparison

Engineering Selection Recommendations

The TAS5508CPAG is the manufacturer-recommended substitute for the TAS5504APAG. Selection of this substitute is supported by:

• Product Status Alignment: The TAS5508CPAG maintains Active product status, ensuring continued availability and manufacturer support, whereas the TAS5504APAG is designated Not For New Designs.
• Compliance Continuity: Both devices maintain identical ROHS3 compliance and MSL 4 ratings, ensuring equivalent environmental and regulatory handling requirements.
• Supply Voltage Compatibility: The TAS5508CPAG's 3V ~ 3.6V operating range includes the TAS5504APAG's 3.3V specification, confirming electrical compatibility at the supply level.
• Package Equivalence: Identical 64-TQFP (10x10) packaging eliminates PCB layout redesign requirements at the footprint level.

Implementation of the TAS5508CPAG requires circuit design modifications to address the increased channel count (8 versus 4) and corresponding pin configuration differences. Schematic and firmware updates are necessary to utilize the expanded functionality.

Frequently Asked Questions (FAQ)

Q: Can the TAS5508CPAG be used as a direct pin-for-pin replacement for the TAS5504APAG?

A: No. While both devices share the 64-TQFP (10x10) package format, the TAS5508CPAG provides 8 channels compared to the TAS5504APAG's 4 channels. Pin assignments differ between the two models. PCB layout and schematic modifications are required.

Q: What is the primary reason for substituting the TAS5504APAG?

A: The TAS5504APAG carries a "Not For New Designs" product status, indicating discontinued active development. The TAS5508CPAG is the manufacturer-recommended alternative with Active product status and assured long-term availability.

Q: Are the supply voltage requirements compatible?

A: Yes. The TAS5508CPAG operates within a 3V ~ 3.6V range, which encompasses the TAS5504APAG's 3.3V specification. Existing power supply designs require no modification.

Q: Do both devices support the same interface protocols?

A: Yes. Both the TAS5504APAG and TAS5508CPAG support I2C and I2S interfaces, ensuring protocol-level compatibility for digital audio interfacing applications.

Q: What are the moisture sensitivity and RoHS compliance implications?

A: Both devices are ROHS3 Compliant with MSL 4 (72 Hours) ratings. Handling, storage, and assembly procedures remain identical between the two components.

Q: What is the frequency specification difference?

A: The TAS5508CPAG specifies a 32kHz ~ 192kHz operating range. The TAS5504APAG does not provide frequency specifications in available documentation. Confirm application frequency requirements against the TAS5508CPAG's stated range prior to implementation.